8. Billy the Kid vs Dracula

In what may be a landmark first, the top three films at this past weekend's box office were all (at least marginally) genre themed releases. Leading the way in what was an extremely strong weekend overall was "Monsters vs. Aliens," a 3-D tribute to creature features past as well as a big budget animated kids film. It was also the largest opening of the year thus far, beating out "Watchmen" by roughly 10%, with a total of $59 million. "M vs.